String bumper



FIG. 1 is an isometric view of a first version of an exemplary string bumper;

FIG. 2 is a right side elevational view of the first version thereof;

FIG. 3 is a left side elevational view of the first version thereof;

FIG. 4 is a front elevational view of the first version thereof;

FIG. 5 is a back elevational view of the first version thereof;

FIG. 6 is a top side elevational view of the first version thereof;

FIG. 7 is a bottom side elevational view of the first version thereof; and,

FIG. 8 is a section view of the first version thereof. 

CLAIM The ornamental design for a string bumper, as shown. 